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TITLE:
Achieving 17.7% Efficiency of Ternary Organic Solar Cells by Incorporating a High Lowest Unoccupied Molecular Orbital Level and Miscible Third Component - imarina:9296447

URV's Author/s:Marsal Garví, Luis Francisco / MÉNDEZ MÁLAGA, MARIA / Pallarès Marzal, Josep / Torimtubun, Alfonsina Abat Amelenan
Author, as appears in the article.:Amelenan Torimtubun, Alfonsina Abat; Mendez, Maria; Moustafa, Enas; Pallares, Josep; Palomares, Emilio; Marsal, Lluis F
Author's mail:alfonsina.abat@estudiants.urv.cat
alfonsina.abat@estudiants.urv.cat
josep.pallares@urv.cat
lluis.marsal@urv.cat
Author identifier:0000-0001-8012-4772
0000-0001-8012-4772
0000-0001-7221-5383
0000-0002-5976-1408
Journal publication year:2023
Publication Type:Journal Publications
APA:Amelenan Torimtubun, Alfonsina Abat; Mendez, Maria; Moustafa, Enas; Pallares, Josep; Palomares, Emilio; Marsal, Lluis F (2023). Achieving 17.7% Efficiency of Ternary Organic Solar Cells by Incorporating a High Lowest Unoccupied Molecular Orbital Level and Miscible Third Component. Solar Rrl, 7(11), -. DOI: 10.1002/solr.202300228
Papper original source:Solar Rrl. 7 (11):
Abstract:A ternary strategy has been demonstrated as being an effective method to improve the power conversion efficiency (PCE); however, general rules for materials selection are not fully comprehended. Herein, nonfullerene acceptor ITIC-M and fullerene acceptor PC70BM possessing higher lowest unoccupied molecular orbital (LUMO) and good miscibility with nonfullerene acceptor Y7 are incorporated as third components in the state-of-the-art of PM6:Y7 binary blend. As a result, the device PCE for both ternary devices improves from 16.46% for binary host to 17.73% and 17.67% for ITIC-M- and PC70BM-based ternary devices, respectively. The higher LUMO of the guest acceptor can play multiple roles to elevate the open-circuit voltage such as reducing energy-loss and reverse saturation current, creating less-localized shallow trap sites along with suppressing charge recombination, and decreasing Urbach energy. Moreover, the good miscibility facilitates an alloy-like phase in acceptors domain for efficient exciton dissociation and electron transport, which leads to improved short-circuit current density and fill factor in ternary devices. The results provide a promising approach to realize high-performance ternary organic solar cells by synergizing the compatible third component with host acceptor.
Article's DOI:10.1002/solr.202300228
Link to the original source:https://onlinelibrary.wiley.com/doi/full/10.1002/solr.202300228
Papper version:info:eu-repo/semantics/publishedVersion
licence for use:https://creativecommons.org/licenses/by/3.0/es/
Department:Enginyeria Electrònica, Elèctrica i Automàtica
Licence document URL:https://repositori.urv.cat/ca/proteccio-de-dades/
Thematic Areas:Materials science, multidisciplinary
Energy engineering and power technology
Energy & fuels
Electronic, optical and magnetic materials
Electrical and electronic engineering
Atomic and molecular physics, and optics
Keywords:Transient photovoltage
Ternary organic solar cells
Nonfullerenes
Impedance spectroscopy
Fullerenes
Alloy-like models
Entity:Universitat Rovira i Virgili
Record's date:2024-10-12
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